fix wrong namespace use

apps/backend/database/factories/UserFactory.php

@@ -6,7 +6,6 @@ use app\Models\User;
 use Illuminate\Database\Eloquent\Factories\Factory;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Str;
-use function Database\Factories\fake;
 
 /**
  * @extends \Illuminate\Database\Eloquent\Factories\Factory<User>